Spring-type batchmeter



Sept. 9, 11930, H. A. TRESTER SPRING TYPE BATCHMETER Fil' d April 6, 1 928 4 Sheets-Sheet ZMmtoy 11H. Hester Mum Sept. 9, 1930. H. A.'TRESTER SPRING TYPE BATCHMETER Filed April 6, 1928 4 Sheets-Sheet 2 INVENTOR.

[1.17. Hester.

A TTORNEYS.

Sept; 9, 1930.

A. TRESTER SPRIBIG TYPE BATCHMETER 4 Sheets-Sheet Filed April 6, 1928 INVENTOR.

' ATTORNEXSI Sept. 9, 1930. H. A. TRESTER 1,775,445

SPRING 'I-YPE' BATCHMETER I Filed April 6, 1928 4 Sheets-Sheet 4 INVENTOR Hf]. 731251122:

%? A TO E s, I

Patented Sept. 9, 1930 M EDQSTATES IIERAU'LT A. TRESTER; tor MILWAUKEE, Wisconsin, nssmnon TO seams-Tears Application filed April 6,

T oday,'in the art o-f concrete mixing, it is quiteTcommonpractice to employ mechanisms lrno vii as hatchmeters in conjunction with m xing apparat c to determ ne the m ring period of aggregates handled by the latter,

and this invention is directed to a novel typ of instrumentas above mentioned wherein novel features lend beneficial properties to the batchmeter.

The particular manner lllWlllCll a batch-V me ter is associated and interrelated With the.

other parts of a miXingmach-ine is clearly set fortl in the patent to Lichtenberg, No.

. 1,321,460, and will not herein be gone into in detail. It suiiices to saythatone of there mechanisms has a connectionwlththe charging means (usually a skip) of themixer, and

in some Way controls or governs the discharge of the prepared aggregates. This controlling action maytake in either singly or collectively anyone of-the following functions. The batchmeter positively moves the discharge chute into discharging position, re-

leases locking nstrumentahties preventing the, discharge "chute from assun'iing a discharging posit on,or operates suitable slgnal apparatus to indicate that the mixing period has terminated. In the present invention the r batchmeter is designed primarily to merely a unlock-or release thedischarge lock, and at the same time operate signal apparatus in the form of agongor bell to call attention to the fact that the machine is in propercondition for. discharge action. i.

For obvious reasons, it is highlydesirable.

to have a batchmeter as small and compactin size as is feasible because mixing machines are not susceptible to incorporation therein of large and unwieldy instruments. Among the important objects of this invention, therefore, is toprovide a batchmeterthat is char; acterizedby the feature of compactness and at the samestime does notsacrifice any of its properties relatinggtoeficient and effective operation.-

In carryingouta practical-embodiment of the invention, chargingactions of the skip are availed of as means, for energizing not only the motivesource that drives the timing instrumentalities of the mechanism, but also mien serene/rerun 1928. ficrial No. 267,934.

the prime mover that releases the discharge loci: and operates the signal. Furthermore, charging actions 01' the skip are employed to discharge chute in nondischarging posi- 11 wherein it is positively held pending the termination of the mixing period.

Considerable novelty resides. in a main driving member and associated mechanisms that are employed inthe invention. A main pivotalshaft is appropriately m-oun'tedin a casing and has at one end a sleeve driveconnection with the skip structure and at the other end is in operative relation With both the discharge lock and signal apparatus. A coil spring encirclesthis shaft and is energized upon charging actions of the skip so that it later causesrotation of the shaft to release the discharge chute and operate the s' al. An arrangement of pawls,lugs, and nilar mechanical 'GXPGdlGlltS are employed in connection with this main driving shaft to eii'ect the proper operation thereof.

Anotherfeature of my invention is the specific construction of the timingmechm nism itself. This mechanism includes a main thereon a strike-0d pin, theposition OfWlliCll may be adjustedto-vary'the time controlled consumes a certain amount of time in unwinding after it has been energized by charging' actionsiot the skip to cause the rotation of the main shaft to unlock the discharge chute, and announces the tact upon the claps i of the determined mixing period. 7 Various other more detailed. objects and advantages Will in part become apparent and in part be hereinafter stated as a detaileddescription of one specific embodiment of the invention is described. For a full and more complete understanding of the invent-ion, reference may be had to the following d e scripti-on and accompanying drawings, n Which 1 Figure 1 isa view from the side of an instrument made in accordance with this nomraine coivr rear, (JFMILWAUKEE, W'ISGONSIII, in CORPORATION operate appropriate instrumentalities to lock ti r @FFEQE 1 timing Wheel which has adjustably mounted invention, the casing and certain parts being broken away and shown in section, while the remaining parts are seen in elevation.

Figure 2 is a front view of the batchmeter, certain of the interior parts being indicated by dotted lines, while portions are broken away to more clearly bring out details of others.

Figure 3 is a view from the front with the casing shown in section, and parts broken away to more clearly bring out details.

Figure l is a detailed view in perspective of the main rotating shaft.

Figure 5 is a detailed showing in perspective of the main driving quadrant and associated pawl constructions.

Figure 6 is a detailed view in perspective one of the pawls.

Figure 7 is a detailed showing in elevation of the oprating mechanism for the signal apparatus, and

Figure 8 is a fragmentary showing in perspective of the main rotating shaft.

Figure 9 is a side view bringing out the arrangement of the signal operating instrumeutalities.

lVhile a preferred specific embodiment of the invention is herein set forth, I do not wish to be limited to the exact constructions illus trated and described, because various modifications in these details might be made in putting the invention into practice Within the purview of the appended claims.

A casing is designated by the reference character A, and may include at its lower end an oil sump B. Access to the interior of the casing A may be provided by including in the structure thereof a door indicated at C. Any appropriate mounting for the door may be availed of such as the hin construction shown at D. In the practical construction of my device the door should be of such dimensions as to leave a sufficient amount of space therebeneath to provide mountin for certain of the carrying and operating shafts. A bell. E is preferably affixed to the extcr r of the door C by a screw and sleeve constr tion shown at F.

Any conventional skip connecting link (not shown) is pivoted in an opening 1 in a driving disc 2. This driving disc has preferably integral therewith a hub-like member or sleeve portion 3 that encircles a sleeve 1. A nonrot-ative relationship be the tween sleeve 4 and hub 3 is created by the of :1V pin 5. Sleeve 4 extends through mange 6 surrounding an opening 7 in casing A and has at its end a flange 8 larger in dimensions than the opening and which bears against the inner wall of the casing. and in conj unction with the hub 3 which bears against flange 6, positively holds these parts in their proper operative positions. A main rotating shaft 9 has a bearing at one end in the sleeve 4; while the other end is journaled in flange 10 surrounding opening 11 in the casing wall. The shaft 9 has substantially three diametric dimensions, and a smaller portion of this shaft projects through the opening 11 at the exterior of the casing. An opening 12 in this portion of the shaft receives a screw bolt 13 that passes through aligned openings in hub 14 of a crank arm 15. The crank arm 15 is provided with means for operatively connecting it with a discharge chute lock in the form of an opening 16.

Referring now more particularly to Figures 4t and 8, the shaft 9 cut away adjacent to the flange 8 on the sleeve 4: to provide a shoulder 17. The shaft is also recessed at the shoulder separating the portions having the larger and intermediate diameters of this member to provide a. shoulder 18. Adjacent to the shoulder defining the smaller intermediate dimensioned portion of the shaft. the latter is cut away to provide still another shoulder 19. A gear sector is mounted for freerotation on the shaft 9. Gear sector 20 has pivotally mounted thereon a pawl 23 pivoted at 24 and actuated by spring 25 for a purpose to be hereinafter more fully set out. One end of the pawl 23 engages the cut away portion of the shaft 9 at 19. A lug 26 projects from the gear sector and is adapted for engagement with a pawl as will be later set forth. Gear sector 20 meshes with a pinion 27 that has preferably integral therewith a main timing wheel 28. All of the wheel 28, pinion 2'7 and a sleeve 29 form substantially a one-piece structure which is mounted for free rotation, on a shaft 30 suitably affixed to a wall of the casin A. The wheel 28 is provided at its periphery with gear teeth and has arranged spirally thereon timing openings 31 the particular purpose and operation of which will be later described. A main spring 32 constituting the prime mover of the timin device has its ll"8 end affixed to the sleeve while its dead end is made fast to the casing A.

A gear wheel 33, a sleeve 34-, and aratchet 35, are, for purposes of operation, a onepiece unit, the gear wheel being in mesh with the gear teeth of the timing wheel 28. All. these last named parts are mounted on a shaft 36 supported by the casing A.

A pinion 37 is mounted for rotation on the shaft 36 and carries on one of its faces, pawls 38 which operatively engage the ratchet 35. It is apparent that rotation of the ratchet in one direction may be accomplished without entailing a corresponding rotation of the pinion 37. However, rotation of the member 35 in the opposite direction causes a corresponding turning of the pinion 37.

A gear 39, operat'vely integral with a second gear 40, is in mesh with the pinion 37. These two gears 39 and 40 are carried by a pivotal member having suitable bearing in the wall of the casing as shown at ll. The

gea r engages a p-inion' l2that-is mounted for rotationon the sh'aft30; A11 escapement ryi'iigprojections 4a, isdrivably connectedwith the gear42"and'thereforeopa e'r'ated thereby. Projectionsel uponrotation engage withlpins 45 outstanding from a sh aft 46. Shaft 46 has appropriate bearing by meansof lugs inthe casing, the lower lugbeing indicated at 47 Arms 48 constituting a R crossbar with respect to the shaft 46, carry attheir eiitremities weights 19.. The Wheel lS,

shaft 4L6, weighted arms 48 and associated in strumentalities, constitute escapement mechanism that governs unwinding action of the energizing or win ding'upiof the latter.

A locking pawl 50engages the shoulder 17 main spring but whichpla-y no part in the on the shaft 9 and held position by a spr ng 51, one end of the spring 51 e'ngagi g the flange 8,;wh1le the other end engagesthe pawl 50. This pawl functions to set up a driving connection between the sleeve 4 and shaft 9 when the former is rotated in one direction, but which aliords no operative connection when rotation is in the opposite direction. Another pawl 52 is mounted on a pivot member 53 which is aflixedto the wall of the casing A as shown at 5 1. A spring 55 is appropriately mounted to create tension on the pawl 52 for a purpose to be hereinafter described. The pawl 52 is cut away to provide a shoulder 56 and has projecting from one side a lug 5.7. The lug 57 is adapted for engagement with the shoulder 26 on the gear sector 20 while the shoulder 56 operatively engages the shoulder 18 for the purpose of holding the shaft 9 in position in a manner to be hereinafter set forth. A coilspring 58 encircles the shaft 9 adjacent to the wall of the casing and tends to opposerotation of the shaft 9 in one direction by charging action of the skip so that the last named action results in an energizing of the spring 58. The spring 58, at a subsequent time, operates to cause rotation of the shaft 9 in the opposite direction to release the discharge lock and operate the signal.

A cam lug 59 projects from the hub 14 and has an abruptface as shown at60 and a longer inclined face designated 61. This cam lug 59 is adapted for engagement with a cam 62 projecting downwardly from the member 63. A spring 64 is coiled arounda pin 65, which acts as a fulcrum for member 63, andsaid pin "65 is mounted on the door C interiorly of the bell Er Thespring 64 has one extremity a1":-

fiXed to the door at 66, while theother end of U the spring terminates in an arm which carries a gong tapping member or hammer 67.

Any suitable connection between the member 63 and spring 64l may be provided so that rotation of this member 63 causes a movement of the gong hammer 67 against the tension of. the spring which later causes thls hammer to. strike sharply against the bell.

1y as follows A pin 68 is inserted in the proper timing opening 31 inthe wheel 28 so thatthe batchmeter will operate fortherequisite period of time.

Charging'action of the loading means of the mixer cause-s rotationof the sleeve 4,

which movement because ofthefpawl 50 and shoulder 17, sets" up a corresponding movement of the shaft '9. Rotation of the shaft 9 causes the gear sector 20, because of the driving connection between these two parts cre ated by the pawl 23 and shoulder 19, to turn thetiming wheel 28. This rotation of the timing wheel energizes the spring 32 to later cause the sameto rotate the wheel 28 in the opposite direction. 1 At thesame time this action takes place, the shaft 9, through its connection at 13 with thedischarge lock with crank arm 15, causes the discharge chute. (not shown) tobe locked so that it cannot be moved into discharging position. Simultaneously the energizing ofthe spring, the cam lug 59 wipes across the cam 62, but due tothe engagement of the latter withthe inclinedsur he operation of the device issubstantialface 61, th'ehammer 67 does not move against the bell.E with suflicient impact" to make a j noise. Charging action of the skip causing rotation of the shaft 9 also energizes the spring 58. After the shaft 9 has been rotated a suflicient distance, the timing pin 68 strikes against the pawl 23, which causes a disen gagementof the other end ofthe pawl from the shoulder 19, thereby discontinuing the, driving connection between shaft 9 and gear sector 20. Upon returnof the charging means to its normal POSllJlOIl,l3ll shoulder 56 engageswith the shoulder 180f the shaft 9 to preventthe latter from returning, which it tends to do under the action of the spring 58. a

ing distance which causes the projection 26 to bear againstthe lug 57 carried by the pawl 52which operates the last named part to dis engagelthe shoulder 56 from the shoulder 18. Shaft 9 isnowquicklyrotated under tension of the spring 58 to release the crank arm. 15 from discharge chute locking position. Si-

multaneouslywith this last action, the hubll is rotated. which causes the cam lug 59 to wipe across cam 62, and due to the latter slipping 05 the abrupt face 60, gong tapper] 67 strikes against the bell providing the desired signal.

7 Obviously the timing pin 68 maybe placed in any one of the openings 31 so that the spring 352 may be energized to any desired degree.

Having thus described. my invention, what I claim as new and desire to secure by Letters Patent in the United States, is

i. A batchmeter of the class described, comprising, in combination. a shaft adapted to have operative connections with the charging and discharging mechanisms of a mixing machine, a gear on said shaft, a pawl for musing a driving relationship between the shaft and gear upon. rotation in one direction, timing instrumentalities operated by the gear, a coil spring around the shaft adapted to rotate the latter, a pawl. for preventing rotation of the shaft in one direction, having a projection thereon, and a lug on said gear adapted to engage the projection on the pawl to cause the latter to release the shaft so that it may move under power of the spring to actuate the discharge connection.

2. In a batchmeter of the class described, a shaft adapted to be operatively connected with a skip and a discharge chute, timing instrumentalities operatively connected with the shaft, means to cause discontinuation of the last named connection after said shaft has been rotated through a prede ermined angle, and means controlled by the timing instru mentalities for rotating the shaft to control operation of the discharge chute.

In a batchmeter of the class described, a member adapted for operation by a skip, a member for locking a discharge chute in inoperative position, a shaft drivably connected with the locking member, means drivably connecting the shaft and skip member only upon charging action of said skip member, timing instrumentalities including a main gear wheel, means operatively connecting the main gear wheel and the shaft only upon rotation of said shaft in one direction, means for discontinuing said operative connection, and means controlled by the timing instrumentalities for actuating the shaft, upon the elapse of a predetermined period, to release the locking member.

4. In a batchm'eter of the class described, a shaft adapted to have operative connection with discharging apparatus of a mixer, a gear connected to the shaft by a one-Way clutch, timing instrumentalities operatively connected with the gear, said timing instrumentalities including a spring which is energized by the gear upon rotation of the shaft in one direction, releasable means for preventing inadvertentretrograde rotation of the shaft under the influence of said spring, escapement mechanism governing the unwinding of the spring, means for releasing said releasable means to permit retrograde rotation of the shaft by said spring after the elapse of apredetermined period, which period is controlled by the timing instrumentalities, said shaft thereby controlling actuation of the discharge apparatus.

5. In a batchmeter of the class described, a shaft provided with means adapted to have operative connections with the charging and discharging mechanisms of a mixing machine, timing instrumentalities including a main toothed timing wheel, a gear engaging said timing wheel and mounted on the shaft, means connecting the shaft with the gear for actuating the gear only upon rotation of the shaft in one direction, a device for discontinuing said connection upon the termination of a predetermined movement of said timing wheel, a spring adapted to be energized upon rotation of the shaft in one direction and to subsequently cause rotation of the shaft in the opposite direction, and means carried by the gear and controlling action of the spring.

In testimony whereof I ailix my signature.

I-IERAULT A. TRESTER. 

